Plus fours Plus fours are loosely tailored slacks cut 4 inches below the knee. They have been traditionally associated with sporting attire from the 1860s and onward, and are particularly associated with golf. Plus fours were introduced to United States by Edward Prince of Wales during a diplomacy trip in 1924.
	Plush Plush is a textile fabric having a cut nap or pile the same as fustian or velvet. Originally the pile of plush consisted of mohair or worsted yarn, but now silk by itself or with a cotton backing is used for plush, the distinction from velvet being found in the longer and less dense pile of plush.
	Plutarch Mestrius Plutarchus , known in English as Plutarch, was a Ancient Greece historian, biographer, and essayist. Born in the small town of Chaeronea, in the Greek region known as Boeotia, probably during the reign of the Roman Emperor Claudius, Plutarch travelled widely in the Mediterranean world, including twice to Rome.
	Pluteaceae Pluteaceae is a Family of mushrooms within Order Agaricales.
	Pluteus Pluteus is a genus of fungi mushroom
	Pluteus cervinus Pluteus cervinus,, also called the Deer mushroom in English, is found from May to September on rotten logs, roots and tree stumps throughout Europe. It can also grow on sawdust and other wood waste. Being very variable in appearance, it has been divided into several varieties or subspecies, some of which are sometimes considered species in their own right.
	Pluto Pluto is the second-largest known dwarf planet in the Solar System. It orbits between 29 and 49 Astronomical unit from the Sun, and was the first Kuiper Belt Object to be discovered. Approximately one-fifth the mass of the Earth's Moon, Pluto is primarily composed of rock and water ice.
	Plutonium Plutonium is a radioactive, metallic chemical element. It has the symbol Pu and the atomic number 94. It is the element used in most modern nuclear weapons. The most important isotope of plutonium is 239Pu, with a half-life of 24,110 years. It can be made from natural uranium and is nuclear fission.
	Pluviôse Pluvi?se (also Pluviose) was the fifth month in the French Republican Calendar. The month was named after the Latin word pluviosus, which means rain. Pluvi?se was the second month of the winter quarter (mois d'hiver). It started between January 20 and January 22.
	Plymouth Plymouth is a city status in the United Kingdom in the South West England of England, or alternatively the West Country, and is situated within the Counties of England of Devon. It is located at the mouths of the rivers River Plym and River Tamar and at the head of one of the world's largest and most spectacular natural harbours, the Plymouth Sound.
	Plymouth Colony The Plymouth Colony was an England colonial venture in North America from 1620 until 1691. The colony contained roughly what is now Bristol County, Massachusetts, Plymouth County, Massachusetts, and Barnstable County, Massachusetts.
	Plymouth Rock Plymouth Rock is the traditional site of disembarkation of William Bradford and the Mayflower Pilgrims who founded Plymouth Colony, in what would become the United States. There is no contemporary reference to it, and it is not referred to in Bradford's journal Of Plymouth Plantation or in Mourt's Relation.
	Plywood Plywood was the first type of engineered wood to be invented. It is made from thin sheets of wood veneer, called plies or veneers, which are stacked together with the direction of each ply's grain differing from its neighbors' by 90. The plies are bonded under heat and pressure with strong adhesives, usually phenol formaldehyde resin, making plywood a type of composite material.
	Pneumatics Pneumatics, from the Greek language p?e?at???? is the use of pressurized gases to do work in science and technology. Pneumatics was first documented by Hero of Alexandria in 60 A.D., but the concept had existed before then. Pneumatic products represent a multi-billion dollar industry today.
	Pneumonia Pneumonia is an illness of the lungs and respiratory system in which the Pulmonary alveolus become inflamed and flooded with fluid. Pneumonia can result from a variety of causes, including infection with bacteria, virus, fungus, or parasites.
	Pneumothorax In medicine, a pneumothorax or collapsed lung is a medical emergency caused by the collapse of the lung within the pleural cavity. It can result from: *A penetrating chest wound *Barotrauma to the lungs *Spontaneously *Chronic lung pathologies including emphysema, asthma
	Pô P? is a city in southern Burkina Faso. It is the capital of the Provinces of Burkina Faso of Nahouri. The main ethnic group are the Gurunsi. It is said to have been founded in around 1500 and is home to an Burkinese Army base. In 1983, an army unit under Blaise Compaor? led a rebellion which resulted in Thomas Sankara's release from prison and ascension to the president of Burkina Faso.
	Po River The Po is a river that flows 652 kilometers eastward across northern Italy, from Monviso to the Adriatic Sea near Venice. It has a drainage area of 71,000 km2 and is the longest river in Italy. It goes through many important Italian towns, including Turin and Milan , in Lombardy.
	Poa *For uses of the initials, go to POA *For the city in the São Paulo state in Brazil, go to Poá Poa is a genus of about 500 species of Poaceaees, native to the temperate regions of both hemispheres. Common names include meadow-grass, bluegrass, tussock, and speargrass.
	Poaceae The true grasses are monocotyledonous plants in the Family Poaceae, also known as Gramineae. There are about 600 genus and between 9,000-10,000 species of grasses . It is estimated that grasslands comprise 20% of the vegetation cover of the earth. This family is the most important of all plant families to human economies, including lawn and forage grasses, the staple food grains grown around the world, and bamboo, widely used for construction throughout Asia.
	Poaching Poaching is illegal hunting or fishing. It may be illegal because: * The game or fish is out of season. * The hunter or fisherman does not possess an appropriate license. * The animal is on restricted land. * The right to hunt this animal is claimed by somebody. * The means used are illegal .
	Pocahontas Pocahontas was a Native Americans in the United States woman who married an Englishman, John Rolfe, and became a celebrity in London toward the end of her life. She was a daughter of Chief Powhatan, who ruled an area encompassing almost all of the neighboring tribes in the Tidewater region of Virginia.
	Pochard The Pochard is a medium-sized diving duck. The adult male has a long dark bill with a grey band, a red head and neck, a black breast, black eyes and a grey back. The adult female has a brown head and body and a narrower grey bill band. The triangular head shape is distinctive. Pochards are superficially similar to the closely related North American Redhead and Canvasback.
	Pocket ocket is a small bag, particularly a bag-like receptacle either fastened to or inserted in an article of clothing. Cargo pants have pockets with an extra large capacity. The word appears in Middle English as poket, and is taken from a Norman language diminutive of O.
	Pocket battleship Pocket battleship is an English language term for a class of warships built by Germany Reichsmarine in accordance with restrictions imposed by the Treaty of Versailles. They were classified as Panzerschiff in German language; they were also known as the Deutschland class named after the first ship of this class to be completed.
	Pocket Books Pocket Books is a division of Simon & Schuster which primarily publishes paperback books. Pocket produced the first mass-market, pocket-sized paperback books in America in early 1939 and revolutionized the publishing industry. The German Albatross Books had pioneered the idea of a line of color-coded paperback editions in 1931 under Kurt Enoch; Penguin Books in England had refined the idea in 1935 and had one million books in print by the following year.
	Pocket gopher The pocket gophers are burrowing rodents of the family Geomyidae. These are the "true" gophers, though several ground squirrels of the family Sciuridae are often called gophers also. The name "Pocket Gopher" on its own may be used to refer to any of a number of subspecies of the family.
	Pocket knife A pocket knife is a folding knife with a blade that fits inside the handle and that is small enough to fit in a pocket. Blades are typically no larger than 3 to 5 in. in length. Pocket knives are very versatile tools, and may be used for anything from opening an envelope, to cutting twine, to slicing an apple.
	Pocket watch A pocket watch is a strapless personal Clock that is carried in a pocket. The display is traditionally analog watch. Pocket watches generally have a chain to be secured to a waistcoat, lapel or belt loop, as well as a hinged cover to protect the face of the watch.
	Podiceps Podiceps is a genus of birds in the grebe family. It has representatives breeding in Europe, Asia, North America and South America. Most northern hemisphere species bird migration in winter to the coast or warmer climates. They breed in vegetated areas of freshwater lakes, nesting on the water's edge, since their legs are set too far back for easy walking.
	Podocarpaceae Podocarpaceae is a large family of mainly Southern Hemisphere conifers, with 18-19 genera and about 170-200 species of evergreen trees and shrubs. The family is a classic member of the Antarctic flora, with its main centres of diversity in Australasia ecozone, particularly New Caledonia, Tasmania and New Zealand, and to a slightly lesser extent, Malesia and South America.
	Podocarpus Podocarpus is a genus of conifers, the most numerous and widely distributed of the podocarp family Podocarpaceae. The 105 species of Podocarpus are evergreen shrubs or trees from 1-25 m in height. The leaf are 0.5-15 cm long, lanceolate to oblong, falcate in some species, with a distinct midrib, and are arranged spirally, though in some species twisted to appear in two horizontal ranks.
	Podocarpus totara Podocarpus totara is a species of Podocarpus endemic to New Zealand. It grows throughout the North Island and northeastern portion of the South Island in lowland, montane and lower subalpine forest at 0-480(-600) m elevation. The Totara is a medium to large tree which grows slowly to around 20-25 m, exceptionally to 35 m; it is noted for its longevity and the great girth of its trunk.
	Podophyllum Podophyllum is a genus of six species of herbaceous perennial plants in the family Berberidaceae, native to eastern Asia and eastern North America. They are woodland plants, typically growing in clonal colony derived from a single root. The stems grow to 30–40 cm tall, with palmately lobed umbrella-like leaf up to 20–40 cm diameter with 3–9 shallowly to deeply cut lobes.
	Podsol Podsol is the typical soil of coniferous, or Boreal forests. The name is Russian language for "under ash" and likely refers to the common experience of Russian peasants of plowing up an apparent under-layer of ash during first plowing of a virgin soil of this type. These soils are found in areas that are wet and cold and also in warm areas such as Florida where sandy soils have fluctuating water tables.
	Poeciliidae Poeciliidae is a family of fresh-water fishes which are livebearers . They belong to the order Cyprinodontiformes and include well-known aquarium fish like the guppy, Poecilia, Xiphophorus, and swordtail. Live-bearing
	Poetic Justice Poetic Justice is a 1993 in film drama film/romance film film starring Tupac Shakur and Janet Jackson and directed by John Singleton.
	Poetry Poetry is a form of art in which language is used for its aesthetics qualities in addition to, or in lieu of, its ostensible meaning . Poetry has a long history of poetry. Early attempts to define it, such as Aristotle's Poetics, focused on the uses of speech in rhetoric, drama, song and comedy.
	Pogo stick A pogo stick is a device, usually considered a children's toy, used for hopping up and down. It was invented by Joe Hopkins in the 1720s. It consists of a pole with a T-bar handle at one end, and spring-loaded footpads on the other. The pole juts down some distance below the footpads and has a rubber cover at the bottom end for traction.
	Pogonia Pogonia is a genus of orchids belonging to the subfamily Vanilloideae.
	Pogostemon Pogostemon is a large genus from the family Lamiaceae. The best known member of this genus is Patchouli.
	Pogrom Pogrom is a form of riot directed against a particular group, whether ethnic, religious or other, and characterized by destruction of their homes, businesses and religious centers. Usually pogroms are accompanied with physical violence against the targeted people and even murder or massacre.
	Poinsettia The poinsettia, also known as the Mexican flame leaf, Christmas star, or Noche Buena, is a sub-tropical plant known for its striking red displays at Christmas time. It is often used as a floral Christmas decoration because of its festive colors. The "flowers" are actually large bunches of colored leaves; the flowers themselves are in the center of each leaf bunch, but rather small and inconspicuous.
	Point of Entry Point of Entry is a heavy metal album from the band Judas Priest. In 1980 Judas Priest garnered some airplay with "Breaking the Law" and "Living After Midnight" from their album British Steel. As a result the band pursued a more radio friendly direction on Point of Entry.
	Pointillism Pointillism is a term coined by art critics to ridiculize works of Seurat, Signac and others. In this kind of criticism, the innovative method of painting in primary colors which generated by the visual mixing of points placed very close to each other the impression of non-primary colours.
	Poison In the context of biology, poisons are substances that can cause injury, illness, or death to organisms, usually by chemical reaction or other activity on the molecular scale, when a sufficient quantity is absorbed by an organism. Paracelsus, the father of toxicology states-- "Everything is poison, there is poison in everything.
	Poison ivy Poison ivy is a plant in the family Anacardiaceae. The name is often spelled "Poison-ivy" to indicate that it is not a true Ivy or Hedera. It is a woody vine that is well-known for its ability to produce urushiol, a skin irritant that causes an itching rash for most people, technically known as urushiol-induced contact dermatitis.
	Poison Ivy Poison Ivy is a DC Comics supervillain and is primarily an enemy of Batman. Created by Robert Kanigher, she first appeared in Batman #181. In the series Gotham Girls, Poison Ivy deemed herself as one of "the world's most prominent eco-terrorists." She is obsessed with plants, botany and environmentalism.
	Poison Sumac Poison Sumac is a woody shrub growing to 3 m tall. All parts of the plant contain a toxic resin called urushiol that causes skin and mucous membrane irritation to humans. When burned, inhalation of the smoke causes diarrhea and other internal irritations. The leaf are pinnate, 25-50 cm long, with 7 - 13 leaflets; the leaflets are 4-10 cm long and sometimes mistaken for individual leaves.
	Poisson distribution In probability theory and statistics, the Poisson distribution is a discrete probability distribution. It expresses the probability of a number of events occurring in a fixed period of time if these events occur with a known average rate, and are independent of the time since the last event.
	Poitiers Poitiers is a town located in west central France. It is a commune in France and the capital of the Vienne dpartement in France and of the Poitou-Charentes rgion in France. Poitiers is situated on the Clain River.
	Poitou Poitou was a Provinces of France whose capital city was Poitiers. There is a marshland called the Poitevin marsh on the gulf of Poitou, on the west coast of France, just north of La Rochelle. Many of the Acadians who settled in what is now Nova Scotia beginning in 1604 and later to New Brunswick, came from the region of Poitou.
	Poker Poker is a card game, the most popular of a class of games called vying games, in which players with fully or partially concealed cards make wagers into a central pot, which is awarded to the player or players with the best combination of cards or to the player who makes an uncalled bet.
	Poker chip Casino poker chips are special casino token representing a fixed amount of money. In the gaming industry they are more generally referred to as Checks or Cheques; the difference being that a 'chip' caries no value, such as those used for Roulette vs. a 'cheque' which carries a specific value and can be cashed in for money.
	Poker Game Poker Game is a List of The Price Is Right pricing games on the United States television game show The Price Is Right. Debuting in 1975, it is played for four prizes, each worth between $300 and $1,000.
	Pokeweed The pokeweeds, also known as poke, pokebush, pokeberry, pokeroot, inkberry or omb, comprise the genus Phytolacca, perennial plants native to North America, South America, East Asia and New Zealand. Pokeweed contains phytolaccatoxin and phytolaccigenin, which are poisonous to mammals.
	Pol Pol is a fictional character in Melanie Rawn's fantasy novels in the Dragon Prince series and is the hero of the second trilogy in this series, the Dragon Star trilogy. Pol was born to Prince Rohan of the Desert and Ianthe, daughter of High Prince Roelstra; however, he did not know the circumstances of his birth for many years.
	Poland Poland , officially the Republic of Poland , is a country located in Central Europe. It is bordered by Germany to the west, the Czech Republic and Slovakia to the south, Ukraine and Belarus to the east, and the Baltic Sea, Lithuania, and Russia to the north.
	Polar Bear The polar bear , also known as the white bear, northern bear, or sea bear, is a large bear native to the Arctic. It is one of the two largest land carnivore species and the apex predator within its range. It is well-adapted to its habitat: its thick blubber and fur Thermal insulation it against the cold, its white coloured fur camouflages it from its prey.
	Polar circle A polar circle is either the Arctic Circle or the Antarctic Circle. On earth, the Arctic Circle is located at a latitude of 66 33' 38" N, and the Antarctic circle is located at a latitude of 66 33' 38" S. Areas between each polar circle and its associated pole will annually experience at least one 24 hour period when the sun is continuously above the horizon and at least one 24 hour period when the sun is continuously below the horizion.
	Polar region Earth's polar regions are the areas of the globe surrounding the geographical pole, north of the Arctic circle, or south of the Antarctic Circle. They are characterised by the polar climate, extremely cold temperatures, heavy glaciation, and extreme variations in daylight hours, with 24 hour daylight in summer, and permanent darkness at mid-winter.
	Polaris Polaris is the brightest star in the constellation Ursa Minor. It is very close to the north celestial pole , making it the current northern pole star.
	Polarity The polarity of an object is, in general, its physical alignment of atoms. The term is often used to describe the positive and negative ends of battery and magnets.
	Polarization In electrodynamics, polarization is the property of electromagnetic waves, such as light, that describes the direction of their transverse electric field. More generally, the polarization of a transverse wave describes the direction of oscillation in the plane perpendicular to the direction of travel.
	Polaroid Polaroid is the name of a type of synthetic plastic sheet which is used to polarization light. The original material, patented in 1929 and further developed in 1932 by Edwin H. Land, consists of many microscopic crystals of iodoquinine sulphate embedded in a transparent nitrocellulose polymer film.
	Polder A polder is a low-lying tract of land that forms an artificial hydrology entity, enclosed by embankments known as dyke . Some need drainage by pumps to prevent the water table within it from rising too high. Some can be drained by opening sluices at low tide.
	Pole Position Pole Position is a racing game computer and video games released in 1982 by Namco, the creators of Pac-Man. In Pole Position, the player has to complete a lap in a certain amount of time in order to qualify for an Formula One race at the Fuji Speedway Racetrack.
	Pole star A pole star is a visible star that is approximately aligned with the Earth's axis of rotation; that is, a star that lies in the direction pointed to by one of Earth's geographic pole. There are potentially both north and south pole stars, but whether there is either depends on the current stellar configuration.
	Pole vault Pole vaulting is an athletics event where competitors use a long, flexible pole as an aid to leap over a bar, similar to the high jump, but at much greater heights. Pole jumping competitions were known to the ancient Greece, as well as the Crete and Celt, but with these exceptions there is no record of its ancient practice as a sport.
	Polemoniaceae The Polemoniaceae comprises 18-25 genera with between 270-400 species of mostly annual plants, native to the Northern Hemisphere and also South America, with the center of diversity in western North America, especially in California. Only one genus is found in Europe, and two in Asia, where they are confined to cool temperate to arctic regions; both genera also occur more widely in North America, suggesting relatively recent colonization of the Old World from North America.